| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Registration plate issues | 6 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Front suspension assembly has an insecure fork brace |2.3.4d| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Brake hose damaged | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Outer Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Throttle operating incorrectly |6.2.1f| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain |6.2.1h| | 1 |
| Rear Brake locking device missing split pin |3.2.A1e| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride suspension linkage |6.2.1h| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| An item not tested |Manual| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Nearside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal leaking (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the steering out to left |2.4 |a|| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Direction indicator insecure both |1.5.3b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |